Recent Blog Articles
Embryo donation: One possible path after IVF
How to stay strong and coordinated as you age
Acupuncture relieves prostatitis symptoms in study
Skin in the game: Two common skin problems and solutions for men
Anti-inflammatory food superstars for every season
Harvard Health Ad Watch: An upbeat ad for a psoriasis treatment
A new targeted treatment for early-stage breast cancer?
What is neurodiversity?
Thinking about holiday gatherings? Harvard Health experts weigh in
Time to stock up on zinc?
By the way, doctor: Is that too much vitamin D?
Q. My doctor found that my blood levels of vitamin D were low, and gave me a prescription for 50,000 international units of vitamin D to be taken every two weeks. But I've read that the recommended dose is more like 1,000 IU a day, and that more than 2,000 IU a day is unsafe. I'm a healthy woman (albeit somewhat osteopenic already) and don't want to do more harm than good!
A. Your doctor's prescription makes sense, but I can see why you're confused.
To continue reading this article, you must log in.
Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.
- Research health conditions
- Check your symptoms
- Prepare for a doctor's visit or test
- Find the best treatments and procedures for you
- Explore options for better nutrition and exercise
I'd like to receive access to Harvard Health Online for only $4.99 a month.Sign Me Up
Already a member? Login ».
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles. No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.
Free Healthbeat Signup
Get the latest in health news delivered to your inbox!